crypto/qce/aead.h

0001 /* SPDX-License-Identifier: GPL-2.0-only */
0002 /*
0003  * Copyright (c) 2021, Linaro Limited. All rights reserved.
0004  */
0005
0006 #ifndef _AEAD_H_
0007 #define _AEAD_H_
0008
0009 #include "common.h"
0010 #include "core.h"
0011
0012 #define QCE_MAX_KEY_SIZE        64
0013 #define QCE_CCM4309_SALT_SIZE       3
0014
0015 struct qce_aead_ctx {
0016     u8 enc_key[QCE_MAX_KEY_SIZE];
0017     u8 auth_key[QCE_MAX_KEY_SIZE];
0018     u8 ccm4309_salt[QCE_CCM4309_SALT_SIZE];
0019     unsigned int enc_keylen;
0020     unsigned int auth_keylen;
0021     unsigned int authsize;
0022     bool need_fallback;
0023     struct crypto_aead *fallback;
0024 };
0025
0026 struct qce_aead_reqctx {
0027     unsigned long flags;
0028     u8 *iv;
0029     unsigned int ivsize;
0030     int src_nents;
0031     int dst_nents;
0032     struct scatterlist result_sg;
0033     struct scatterlist adata_sg;
0034     struct sg_table dst_tbl;
0035     struct sg_table src_tbl;
0036     struct scatterlist *dst_sg;
0037     struct scatterlist *src_sg;
0038     unsigned int cryptlen;
0039     unsigned int assoclen;
0040     unsigned char *adata;
0041     u8 ccm_nonce[QCE_MAX_NONCE];
0042     u8 ccmresult_buf[QCE_BAM_BURST_SIZE];
0043     u8 ccm_rfc4309_iv[QCE_MAX_IV_SIZE];
0044     struct aead_request fallback_req;
0045 };
0046
0047 static inline struct qce_alg_template *to_aead_tmpl(struct crypto_aead *tfm)
0048 {
0049     struct aead_alg *alg = crypto_aead_alg(tfm);
0050
0051     return container_of(alg, struct qce_alg_template, alg.aead);
0052 }
0053
0054 extern const struct qce_algo_ops aead_ops;
0055
0056 #endif /* _AEAD_H_ */